We all know that certain plants have the ability to purify the air, but did you know that some houseplants improve the air at night? Those are the best plants to keep in your bedroom, and we’re stacking up those plant babies everywhere for the ultimate planty look that’s functional too.

According to Happy By Design by garden journalist Victoria Harrison, there’s a short list of houseplants that actually help us get a better quality night sleep. Says Victoria in a chapter of her sweet and thoughtful design book…

“The majority of houseplants release oxygen during the day but not at night. So if you want to oxygenate your bedroom while you sleep, you’ll need to pick one of the small tribe of plants that go against the grain — these plants all work hard to clean and purify the air all through the night. The following are nighttime oxygenators that will stand guard over you while you snooze.”